Pulley.



' 'f H. J; GILBERT.

PULLEY.

APPLICATION FILED MAY 23, 1904.

1,022,840.l A v 'Patented Apr.9,1912.

' JJ y www! COLUMBIA PLMgOQRAPl-l C0.. WASHINGTON D c UNITED STATES PATENT OFFICE.

HENRY J. GILBERT, OF SAGINAW, MICHIGAN.

PULLEY.

. new and useful Improvements in Pulleys,

of which the following is a specification.

My invention relates to pulleys, more particularly those of the split type, and has for its object the production of a sheetY metal pulley which shall bev simple and economical of manufacture and durable and efficient inA operation. n f

The principal features of my present 1nvention relate to an improved constructionV of hub and spoke arms, and a novel form of connection of such arms with the rim.

In the drawings, Figure 1 is a side elevation of a pulley embodying my invention; Fig. 2 a vplan view of one of the pulley halves with the clamping bolts in, section;

Fig 3 a section on line 3 of Fig. 1; Fig. 4 a

section on the irregular line 4 of Fig. l; Fig. 5 a perspective of one of the hub'plates or sections; Fig. 6 a perspective of the lower end of one of the supplemental spoke arms; Fig. 7 a plan view of one of the spoke arms; Fig. S a section of one of the pulley halves of a narrow faced pulley, with the central spoke `arm structure omitted; and Fig. 9 a detail view of one of the ends of the T-iron.

My present invention represents an improvement or modification of the construction of pulley illust-ratedin my pending application iled'May 23d, 1904,- Serial No. 209,334, inasmuch as the spoke arms are composed of angle irons, but the present pulley differs from the pulley of said application as to hub structure and method of connection of the spoke arms with the rim, and also differs in the provision of supplemental spoke arms.

As herein shown, and referring part-icularly to Figs. l to 4, the pulley comprises essentially the rim segments l, the spoke arms 2 arranged in pairs, and hub pla-tes or sections 8, to which may be added, if desired, the hub thimble 4 and the supplemental spoke arms 5, as comprised in the pulley illust-rated in Fig. l. The number of pairs of spoke arms is dependent upon the width of the pulley or upon the desired strength, as hereinafter made apparent. f n

The rim segments each comprise a semicircular band of sheet metal of any desired width according to whether the pulley is to Specification of Letters Patent.

be wide or narrow faced, or otherwise, and having inturned peripheral anges 1a which are radial of the pulley. For a narrow .'faced pulley as illustrated in Fig. 8, a simple rim with such flanges is sufficient, but for a wider facedpulley or a pulley of considerable diameter a reinforcing member is employed', as seen in Figs. 3 and 4, where such member is a T-iron 6. These Hanges and the T-iron constitute the means of connection of the spoke arms to the rim, as hereinafter explained. In the wider-faced t-ype of pulley illustrated inv Figs. 1 to 4,'now being described, the spoke Varms are arranged in pairs, there being two outer pairs connected with the rim substantially at its edges, and two inner pairs thereof connected with the rim at the central line thereof. In the form of narrower-faced type of pulley illustrated in Fig. 8, the two inner pairs of spoke arms are dispensed with, leaving the two outer pairs thereof as the main spoke structure.

Still referring to the construction of pulley illustrated in Figs. 1 to 4, each spoke arm 2 extends entirely across the pulley, in

a plane parallel to the plane dividing the pulley halves and, as herein shown, each arm is composed of an angle iron, which is L- shaped in cross section, comprising two flanges, one of which, marked 2a, is radial of the pulley and inwardly directed and the other, marked 2", is arranged at right angles to its companion flanges, as clearly indicated in Fig. 3.

The ends of each spoke arm are bent or folded at substantially right angles, and in the plane of its flange 2a., as illustrated in Fig. l, and, in respect to the two outer pairs of spoke arms, the ange 2b is Vprovided at such ends with a tongue 2c extending laterally and inwardly toward the center line of the pulley, which tongue conforms to the contour of the inner'face'of the rim and is secured thereto. As shown in Fig. 2, the two inner pairs of spoke arms 2 are similar to the-outer pairs thereofwith vthe exception of the tongue 2,'which'is omitted therefrom. Y i

Referring tothe outer pairs of spoke arms, each end of such arms is secured to the inturned flange la in suitable manner, as by the rivets 7, and to the rim Vby rivets 8. The ends of the inner pairs of spoke arms are secured to the rim by the rivets 9 and to the stem or web of the T-iron 6 by the rivets 10.

Patented Apr. 9, 1912.

Application led May 23, 1904. Serial No. 209,335.

As indicated more particularly in Figs. 2, t and 9, the flanges of each T-iron are, by preference, extended beyond the web or stem thereof, and are centrally split, forming flanges or tongues 6a which are folded in opposite directions at right angles to the body of the T-iroii, which tongues are arranged to rest against and be secured to the inner surface of its rim segment from the center line thereof and laterally toward the edges.

By preference, though not of necessity, the ends of the spoke arms as well as of the` T-irons are interlocked with the meeting ends of the rim segments and, in addition, the outer pairs of spoke arms are interlocked with the flange 1EL of such segments. In the present instance, each of the segments is provided at its opposite ends with tongues which are folded inwardly and backwardly to form sockets or recesses to receive the flanges and tongues of the spoke arms and of the l'iroiis. Two of such tongues marked 1b receive the flanges 2b and tongues 2C of the outer pairs of spoke arms and the flanges or tongues 6a of the T-iron 6. Two narrow flanges 1c forni wider sockets to take in the flanges 2b of the inner pairs of spoke arms. Likewise the flanges 1a of the rim segments are extended as tongues 1d which are folded inwardly and backwardly to form recesses to receive the flanges 2a of the outer pairs of spoke arms. y

The rivets 7,'8 and 9 also pass through the tongues of the rim in order to secure the'` parts Within their respective sockets or re- In this manner and by these means a strong and efficient connection is obtained between the spoke arms and rim.

In addition to the described interlocking I of the spoke arms and rim, the spoke arms themselves are, by preference, interlocked, and to this end one end of each spoke has a projection or pin 2f and the other end a recess 2g corresponding in shape to such pin, with the result that when the pulley halves are assembled the pin of each spoke arm may be received by the recess of its companion spoke.

The hub structure carried by the spoke arms 2, as herein shown, comprises a series of hub sections or plates 3, one of which is illustrated in perspective in Fig. 5. Each hub plate has a semi-circular recess 3a1 whereby it may be fitted or saddled upon the hub thimble t or directly upon the shaft itself when a hub tliimble or the like is not employed. Each hub section or plate has a right-angled flange 3b which fits beneath the flange 2b of its spoke arm at its middle portion and thereby supports the latter. The spoke arms and hub sections are secured together in suitable manner, as by means of the rivets 1l, and in ease a hub thimble is used, the same may be held in place by the rivets 12 passing through such spoke arms and hub sections.

The pairs of spoke arms and their associated hub plates are held or clamped upon the shaft by the clamping bolts 13 passing through the spoke arms and hub sections and by the clamping bolts 14 near the outer ends of the spoke arms. However, the outer clamping bolts may be dispensed with in small diameter pulleys.

The supplemental spoke arms 5, hereinbefore mentioned as desirable in some types or sizes of pulley, are flat strips or bars and are positioned at right angles to the main spoke arms and, passing through the side recesses 3c of the hub sections or plates, eX- tend from'each spoke arm radially to the rim to which they are connected in suitable manner. The two outer sets of these supplemental spokes are, in the present instance, fasteiied to the inturiied flanges 1a of the rim by rivets 15, while the two inner sets of such supplemental spokes are fastened to the stem or web of the T-iroii by rivets 16, all as clearly indicated in Figs. 1 and 3. f

The inner end of each supplemental spoke arm 5 is curved to the contour of the hub thiinble or of the shaft opening, so as to fit upon the thimble, and for the purpose of readily and efficiently lockino' such spokes to their respective spoke arms and hub sections I provide for the interlocking of these parts in the following manner: Each spoke arm, near its inner end at the proper point, has opposite side notches 5, as indicated in Fig. 6, the distance between which notches, that is the width of the spoke arm at such point, equals the length of the recess 3 formed on the edge of each hub section or plate, Fig. 5, with the result that after suoli supplemental spoke arm is inserted through the slot 2d of its spoke arm 2, Fig. 7, and properly positioned in relation thereto, the hub section thereof, when put in position or assembled therewith, will engage the supplemental spoke arm, inasmuch as the edges of the flanges 3b thereof immediately adj acent the recess 3c will enter the notches 5a and thereby effectively hold and lock the spoke 5 in place.

As indicated more particularly in Figs. 2, 3 and 5, the clamping bolts of the outer pairs of main spoke arms 9. pass through bolt holes 2e in such arms and also through bolt holes 3d in the hub sections in respect to the inner set of such clamping bolts, whereas the clamping bolts of the inner pairs of spoke arms 2 are passed through between the two sets of such arms whose radial flanges 2a are arranged adjacent each other. As shown in Fig. 3, the horizontal fianges 2b of these inner pairs of spoke arms 2 need not be as wide as the similar fianges of the outer sets, and likewise the flanges 31 of the hub sections may be correspondingly reduced. The inner set of spoke arms may be separated any desired distance to permit its clamping bolts to pass through and to give support for washers 13@ for such bolts.

As illustrated in Fig. 8, 'the inner sets of spoke arms, both the sets of arms 2 and 5, may be dispensed with, but in other respects the construction of pulley here shown is the same as that already described, with the eX- ception, of course, that its rim -is narrower.

It will be understood that, so far as my broader claims are concerned, the novel con-- struction of spoke arm and hub structure is independent of the particular connection be-l tween such arms and the rim, and also that the novel form of connection is independent of the particular hub structure. That is to say, the novel co-nstruction of spoke arm and hub may be used in connection with plain rim segments with abutting meeting ends without any provision for interlocking with the spoke arms, and also that the novel spoke and rim connection may be utilized without reference to the particular construction of the hub sections.

Although I have described more or less precise forms and details of construction, I

.do not intend to be understood as limiting myself thereto, as I contemplate changes in form, proportion of parts, and the substitution of equivalents as circumstances may suggest or render expe-dient, without departing from the spirit of my invention.

I claim: Y l. A pulley comprising rim` segments having inturned peripheral flanges, and spoke arms consisting of angle irons composed solely of two fianges interlocked with such peripheral flanges; substantially as described. p

2. A pulley comprising rim segments having inturned peripheral flanges, which, at the meeting ends of such segments, are cX- tended and folded back to form sockets, and

spoke arms engaged by such sockets; sub` stantially as described.

3. A pulley comprising rim segments having inturned peripheral flanges, which, at the meeting ends of such segments, are eX` tended and folded back to form sockets, and spoke arms consisting of angle irons whose ends are engaged by such sockets; substan` tially as described.

4. A pulley comprising rim segments having inturned peripheral flanges, which, at the meeting ends of such segments, are eX- tended and folded back to form sockets, and

spoke arms consisting of angle irons, one of whose lianges is engaged by such sockets;

substantially as described.

5. A pulleycomprising rim segments having inturned peripheral anges, which, at the meeting ends of such segments, are eX- tended and folded back to form sockets,

6. A pulley comprising rim segments having their meeting ends inwardly folded to form sockets, and spoke arms consisting of angle irons having end extensions or tongues 2C engaged by such sockets; substantially as described.

7. A pulley comprising rim segments having their meeting ends inwardly folded to form sockets, and also having inturned peripheral flanges, and spoke arms consisting of angle irons connected with such flanges and having end tongues 2c engaged by said sockets; substantially as described.

8. A pulley comprising rim segments having their meeting ends inwardly folded to formsockets, and also having inturned peripheral flanges, whose ends are inturned to form sockets, and spoke arms consisting of angle irons engagedat their ends by the said sockets of the meeting ends and of the flanges of the rim; substantially as described.

9. A pulley comprising rim segments having their meeting ends inwardly folded to form sockets, and also having inturned peripheral Hangesivhose ends are inturned to form sockets, and spoke arms consisting of angle irons, one of whose flanges is directed radially toward the center of the lpulley and is engaged by the sockets of the rim flanges, said spoke arms being also engaged at their ends by the sockets formed by the meeting ends of the rim; substantially as described.

10. A pulley comprising rim segments having their meeting ends inwardly folded to form sockets, and also having inturned peripheral flanges, whose ends are inturned at their ends with lateral tongues 2 engaged by the sockets formed -by the meeting ends of the rim; substantially as described.

11. A pulley comprising rim segments having inturned-peripheral flanges, and a plurality of spoke arms interlocked with said segments and also with its said flanges; substantially as described. v

12. A pulley comprising rim segments having inturned peripheral flanges, a plurality of spoke arms consist-ing of angle irons connected at their ends with said flanges, and a separate set .of similarly formed spoke arms connected at their ends with the rim intermediate its anges; substantially as described.

18. A pulley comprising rim segments having inturned peripheral iianges, a plurality of spoke arms consisting of angle irons connected at their ends with said flanges, said rim being provided with an interior web, and a separate set of similarly formed spoke arms connected at their ends with the rim intermediate its flanges; substantially as described.

14. A pulley comprising rim segments having inturned peripheral flanges, a plurality of spoke -arms consisting of angle irons connected at their ends with said flanges, and a separate set of similar spoke arms connected at their ends with the rim intermediate its flanges; substantially as described.

15. A pulley comprising rim segments having inturned peripheral flanges whose extended ends are inturned to form sockets, two outer pairs of spoke arms consisting of angle irons engaged by said sockets, and a separate set of similar spoke arms arranged between said outer pairs of spoke arms and connected at their ends with the rim intern mediate its flanges; .substantially as described.

16. A pulley comprising rim segments' having inturned peripheral flanges whose extended ends are inturned to form sockets, and whose meeting ends are extended to form sockets, two outer pairs ofl spoke arms consisting of angle irons engaged by said sockets of' the flanges, and a separate set of similar spoke arms arranged between said outer pairs of spoke arms and engaged at their ends with the sockets of the rim; substantially as described.

17. A pulley comprising rim segments, main spoke arms consisting of angle irons connected at their ends with the rim segments, and supplemental spoke arms connected at their outer ends with the rim and interlocked at their inner ends with the main spoke arms; substantially as described.

18. A pulley comprising rim segments, main spoke arms consisting of angle irons connected at their ends with such segments, hub sections arranged at the middle portions of such spoke arms, and supplemental spoke arms connected at their outer ends with the rim and passing thro-ugh the main spoke arms and there engaged by the hub sections; substantially as described.

19. A pulley comprising rim segments, main spoke arms consisting of angle irons connected at their ends with such segments, hub sections arranged at the middle portions of such spoke arms, and secured thereto, and supplemental spoke arms connected at their outer ends with the rim and having their inner ends passed through said main spoke arms and the hub sections, which latter engage and lock the supplemental spoke arms; substantially as described.

20. A pulley comprising rim segments, main spoke arms consisting of angle irons connected at their ends with such segments, hub sections arranged at the middle portions of such spoke arms, and supplemental spoke arms connected at their outer ends with the rim and having their inner ends passed through said main spoke arms and the hub sections, said supplemental spoke arms having notches formed near their inner ends and engaged by said hub sections; substantially as described.

21. A pulley comprising rim segments, main spoke arms co-nsisting of angle irons connected at their ends with such segments, hub sections arranged at the middle portions of such spoke arms, and each comprising a plate 3 having a flange 8b coperating with one of the angles or flanges of its main spoke arm, said iange having a side recess 3C, and each of said main spo-ke arms having a slot, and supplemental spoke arms connected at their outer ends with the rim and having opposite notches 'formed near their inner ends, such inner ends being passed through the slots of the spoke arms and said notches being engaged by the recesses 3C of the hub plates; substantially as described.

22. A pulley comprising rim segments, spoke arms connected at their outer ends with the rim segments, and substantially semi-circular T-irons arranged within the segments and having at their meeting ends lateral tongues which rest against the inner face of the segments; substantially as described.

23. A pulley comprising rim segments, spoke arms connected at their outer ends with the rim segments, and substantially semi-circular T-irons arranged within the segments and having their flange portions extended beyond their stem portions and laterally folded against the inner face of the segments; substantially as described.

24. A pulley comprising rim segments, spoke arms connected at their outer ends with the rim segments, and substantially semi-circular T-irons arranged within the segments and having their flange portions extended and divided into two tongues which are folded laterally at right angles to the flange portions and are connected with the rim segments; substantially as described.

25. A pulley comprising rim segments having infolded meeting ends forming sockets, spoke arms connected at their ends with the rim segments, and T-irons arranged within the segments and having lateral tongues or flanges formed at their ends and engaged by said sockets; substantiallyas described.

26. A pulley comprising rim segments having infolded meeting ends forming sockets, spoke armsy connected at their ends with the rim segments, and T-irons arranged within the segments and whose flange portions are extended beyond their stem portions and laterally folded so as to lie within said sockets; substantially as described.

27. A pulley comprising rim segments, spoke arms, and substantially semi-circular T-irons arranged within the segments and having lateral tongues formed at their meeting ends, said rim segments having inturned tongues at their meeting ends forming sockets engaging the tongues of the T-y irons and the outer ends of the spoke arms; substantially as described.

28. A pulley comprising rim segments, main, spoke arms consisting of angle irons connected at their ends with such segments, hub sections arranged at the middle p0rtions of such spoke arms, and each comprising a plate 3 having a flange 3b cooperating with one of the angles or flanges of its main spoke arm, said ange having a side'recess 3", and each of said main spoke arms having a slot, and supplemental spoke arms connected at their outer ends with the rim and having notches 5a formed on opposite edges near their inner ends leaving the width of such spokes at this point equal to the length of the recess 3, such inner ends being passed through said slots of the main spoke arms and their notches 5a being engaged by the recesses 3* of the hub plates or sections; substantially as described.

29. A pulley comprising a rim having inturned peripheral flanges, two sets of spoke arms connected near their outer ends with said rim flanges and having such outer ends extended laterally and inwardly toward the center line of the rim and connected to such rim, and hub sections coperating with said spoke arms; substantially as described.

30. A pulley comprising rim segments having, at their meeting ends, infolded tongues forming sockets, spoke arms arranged in radial planes corresponding to the edges of said rim segments and having lateral ianges received by said sockets and thereby interlocking with the rim segments, and hub sections coperating with said spoke arms; substantially as described.

3l. A spoke pulley provided with a metal rim having its edges inwardly flanged and provided with spoke-arms having their outer ends formed to seat upon the flanges and also offset in a direction transversely of the rim upon the inner face of the rim and secured in such position. y

82. A pulley having a hub, sheet metal spoke-arms arranged with their fiat sides facing the sides of the pulley, and a rim provided with flanges at its edges extending inwardly at substantially right angles relative thereto, said spoke-arms being secured at their outerends to the rim and having straight portions abutting the inner faces of the iianges and ends offset in a direction transverse of the rim underlying the rim.

HENRY J.V GILBERT.

Witnesses:

S. E. HIBBEN, Louis B. ERWIN.r

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

